Table 1 Radiation dose (and comparative background radiation exposure) associated with various imaging techniques, including plain-film x-rays, computed tomography (CT) scans and computed tomography angiography (CTA) scans. Exposure calculated with ImPACT CT Patient Dosimetry Calculator (Version 0.99w, ImPACT, St. George’s The radiation exposure of Computed Tomographic Angiography (CTA) in DIEP...

This review covers papers from the previous two years not being represented at this conference. Optically stimulated luminescence detectors, diamond detectors and radiochromic film are the major topics. An effort to link these papers to 3D dosimetry is included in this brief report. An overall theme of linear, water equivalent response is seen throughout the topics included.

The formal Presidential regalia is an ornate chain from which is suspended the badge of the British Medical Association and below it the badge of the Society (Figure 1 ). The large badge is engraved on the front 'British Medical Association Belfast 1909' (Figure 2). It was presented by the medical profession of Ulster to Sir William Whitla who was President of the BMA when it met in Belfast in ...

The visible absorption spectra of Radiachromic FWT-60 radiochromic film have been investigated to analyse the dosimetry characteristics of the film. The film is radiation sensitive to high absorbed doses. The visible absorption spectra of this film when exposed to photon radiation show a peak at 605 nm which is stable over the dose range of 0 Gy to 20 kGy. The radiation sensitive absorption spe...

PURPOSE This investigation studies the feasibility of PRESAGE, a 3D polyurethane dosimeter, for relative dosimetry measurements of clinically relevant proton treatments using an anthropomorphic head phantom developed by the Radiological Physics Center (RPC). Performance of a low-LET dependent PRESAGE was evaluated by comparison to the traditionally used radiochromic film, EBT2, and thermolumine...

The aim of this study was to demonstrate how dosimetry with an amorphous silicon electronic portal imaging device (a-Si EPID) replaced film and ionization chamber measurements for routine pre-treatment dosimetry in our clinic. Furthermore, we described how EPID dosimetry was used to solve a clinical problem. IMRT prostate plans were delivered to a homogeneous slab phantom. EPID transit images w...

The need for an accurate, practical, low-cost 3D dosimetry system is becoming ever more critical as modern dose delivery techniques increase in complexity and sophistication. A recent report from the Radiological Physics Center (RPC) (1), revealed that 38% of institutions failed the head-and-neck IMRT phantom credentialing test at the first attempt. This was despite generous passing criteria (w...

OBJECTIVES Bisphenol A diglycidyl ether (BADGE) is a liquid compound obtained by condensation of two molecules of epichlorohydrin with one molecule of bisphenol A. General and reproductive toxicity with BADGE has been reported higher than 1000 mg/kg/day. This study was performed to show the effects of acute exposure to BADGE below 1000 mg/kg/day on the testis in adult male rats. METHODS BADGE...

The need for fast, accurate and high resolution dosimetric quality assurance in radiation therapy has been outpacing the development of new and improved 2D and 3D dosimetry techniques. This paper summarizes the efforts to create a novel and potentially very fast, 3D dosimetry method based on the observation of scintillation light from an irradiated liquid scintillator volume serving simultaneou...